This document describes the features and dimensions of the NPN small signal transistor BCX19 from ROHM Co., Ltd. It has high gain and low saturation voltage, and complements the BCX17.
The BCX19 is an NPN small‑signal transistor offered by ROHM. It is intended for general‑use electronic equipment such as audio‑visual, office‑automation, communication devices, and other consumer electronics. The datasheet lists its features, dimensions, and typical application circuits.
Key specifications include a collector‑emitter voltage of 45 V, emitter‑base voltage of 5 V, collector current up to 0.5 A, and a transition frequency of 250 MHz. The device is supplied in a T116 surface‑mount package with a basic ordering unit of 3000 pieces.
| Emitter‑base voltage (Vebo) | 5 V |
|---|---|
| Collector current (Ic) | 0.5 A |
| Power dissipation (Pc) | 0.35 W |
| Junction temperature (Tj) | 150 °C |
| Storage temperature (Tstg) | -65 to 150 °C |
| Transition frequency (fT) | 250 MHz |
| Package type | T116 |
| Basic ordering unit | 3000 pieces |
It is supplied in a T116 surface‑mount package.
The typical transition frequency is 250 MHz.